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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 2651. |
How many electrons can be accommodated in a sub-shell for which n 3,l 1 |
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Answer» Explanation: 2 in each ORBITAL and TOTAL orbital is 3 so 2 into 3 is 6 |
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| 2652. |
Neme and schematic representation of all posible dipeptide formed from alanine glycine and tyrosine |
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Answer» Ala-Ala,Gly-Gly,Ala-Gly,Gly-Ala in case of trepepdites they INCREASE from 2 amino ACIDS to 8 Explanation: |
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| 2653. |
(a)Give the general properties of the following with three examples of each(i)Solution (ii)Suspension (iii)Colloids(b) Which of the following shows tyndal effect and why? (I) Solution ( II) Suspensioni will mark as brainleast |
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Answer» Explanation: a) (I) SOLUTION :- + A homogeneous mixture of two or more substances is called Solution. + It has 2 major COMPONENTS and they are : Solvent & Solute. EXAMPLES :- A) SUGAR AND SALT SOLUTION B) DUST FREE AIR C) BRASS (II) SUSPENSION :- + A heterogeneous mixtures of insoluble particles of solute, spread throughout a solvent is called Suspension. + The size of particles is more than 10^-5 cm in diametre. + The particles of suspension can be separated from.solvent by the process of filteration. EXAMPLE :- A) MUDDY WATER B) SLAKED LIME WATER C) PAINTS. (III) COLLOIDS:- + Heterogeneous nature. + The size of particles of colloids of 10^-9 to 10^-7 cm. + Separation of colloidal particles by centrifugation. + Stability EXAMPLE :- A) MILK B) FOG C) SMOKE b) Suspension will show the tyndall effect because the BIG size of particles can be seen from the microscope.And when we show a torch in the solution the light scatters due to the big size of particles and show tyndall effect. I HOPE IT WILL HELP YOU. And if it helped then please mark it as the brainliest answer.plz.
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| 2654. |
What is the real picture of human reproduction part of male |
Answer» YES you can search either in YOUTUBE or GOOGLE, you will get it... |
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| 2655. |
What is the structure of 2-ethoxy pentanoic acid? |
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Answer» this is the STRUCTURE of 2-ethoxypentanoic ACID. PLEASE MARK me as a BRAINLIEST
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| 2656. |
determine mass of CO2 gas present in 8.21 metre cube of container at pressure 5 ATM and temperature 223 degree Celsius |
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| 2657. |
Which one of the following statements is not correct about the three states of matter i.e. solid, liquid andgaseous[ ]a) Molecules of a solid possess least energy whereas those of a gas possess highest energyb) The density of solid is highest whereas that of gases is lowestc) Gases like liquids possess definite volumesd) Molecules of a solid possess vibratory motion |
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Answer» Answer: |
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| 2658. |
317. Two elements X and Y have atomic numbers 12 and 16 respectively. To which period of theperiodic table do these two elements belong? What type of bond will be formed between them and(ii) How will the concentration of H3O+ ions change on dilution?why? Also, give the chemical formula of the compound formed.18 (i) Create a terrestrial food chain depicting four trophic levels.3 |
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Answer» diduct it ETC........................ |
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| 2659. |
How many unit cells are there in 1.00cm3 of aluminum? with solution |
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Answer» NUMBER of UNIT CELLS in 1 CM3 = 1 / 4.42 x 10-23 = 2.26 x 1022 unit cells. |
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| 2660. |
Write the IUPAC name of the above compound. |
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Answer» pls MARK as brainlist..... |
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| 2661. |
Ans thisWith correct answer please |
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Answer» Answer: False of first PART |
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| 2662. |
The number of d-electrons retained inFe2+ (At. no. of Fe = 26) ion is: |
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Answer» Answer: The NUMBER of d electrons retained in Fe2 At number of FE 26 ions is 6 or 4 |
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| 2663. |
The number of atoms in 0.08 g oxygen gas is? |
Answer» ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘs ᴜ ᴍᴀᴛᴇ............ |
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| 2664. |
Ans this question with correct answer |
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Answer» 1. NAPHTHALENE from naphthalene and SODIUM chloride. ----------> B: Sublimation 2. Cream from milk. ----------> D: Centrifugation 3. Kerosene oil from kerosene oil and WATER. ----------> A: Separating funnel 4. Lead nitrate from an aqueous SOLUTION of lead nitrate. -----------> C: Boiling 5. Ammonia form an aqueous solution of ammonia. ------------> E: Distillation Be Brainly!!! |
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| 2665. |
IUPAC name of the following compound is2 2 23O||NC CH C CH CH CH COOH|SO H |
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Answer» Answer: 222 3 o 11 SO H |
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| 2667. |
Why doesn't synthesis of free glucose residues take place in the cytosol |
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Answer» Answer: hope you have like if you like then plz MARK me as a BRAIN liest plz plz mark me as a brain liest plz |
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| 2668. |
atomic number of sodium is 11 and that of chlorine is 17. how many electrons are there in the outermost shell of chlorine? What type of bonding is present in sodium chloride? |
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Answer» Answer: cl- 7 ELECTRONS are PRESENT in valence SHELL of CHLORINE covalent BOND |
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| 2669. |
Give an experiment to identify acids, bases, salts with natural indicators |
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Answer» Answer: Natural Indicator is a type of indicator that can be found naturally and can determine whether the SUBSTANCE is an ACIDIC substance or a basic substance. Some examples of natural indicators are red cabbage, turmeric, grape JUICE, turnip SKIN, curry powder, cherries, beetroots, onion, tomato, etc. Explanation: May this ANSWER will help you plz mark has brainliest |
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| 2670. |
Which is used in making artificial joints? |
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Answer» Answer: The metals USED in artificial knees are alloys of cobalt-chromium and titanium. The bearing portion of THEJOINT is MADE of a high-grade, wear-resistant plastic. The metal-plastic bearing combination is the most common type used in knee replacement implants (from Parts and MATERIALS ). |
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| 2671. |
A mixture of 20 ml of CO, CH4 and N2 was burnt in excess of O2 resulting in reduction of 13 mL of volume. The residual gas was then treated with KOH solution to show a contraction of 14 ml in volume. Calculate volume % of CH4 in mixture : (1) 40 (3) 60 (2) 20 (4) 50/////////give the correct answer opt |
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Answer» Explanation: A mixture of 20 ml of CO, CH4 and N2 was burnt in excess of O2 resulting in REDUCTION of 13 mL of volume. The residual GAS was then TREATED with KOH solution to SHOW a contraction of 14 ml in volume. Calculate volume % of CH4 in mixture : (1) 40 (3) 60 (2) 20 (4) 50/////////give the correct answer opt |
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| 2672. |
Which of the element shows only + 1 Oxidation state in transition series |
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Answer» Scandium is the element that shows only + 1 OXIDATION state in transition series
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| 2673. |
Formation of covalent molecule with examples |
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Answer» For Example: In the formation of a NITROGEN molecule, each nitrogen atoms having five valence electrons PROVIDES three electrons to form three electron pairs for sharing. THUS, a TRIPLE bond is formed between the two nitrogen atoms. hope it will help you |
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| 2674. |
Among N, O, P, S, Which has higher electronegativity value? * |
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Answer» O has HIGHER ELECTRONEGATIVITY value. Explanation: |
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| 2675. |
ULIUI(ब) सोडियम डाइक्रोमेट को पोटेशियम डाइक्रोमेट में कैसे परिवर्तित किया जाता है? |
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Answer» (3) सहसंयोजी ठोस . बे ठोस जिनकी संरचनात्मक इकाई परमाणु होते है, सहसंयोजी ठोस कहलाते है | उदा- हीरा, गिरे फाइट,सिलिका, आदि | इन ठोसों में परमाणु के मध्य सहसंयोजक बंद पाए जाते हैं |सह संयोजक बंद के द्वारा इस प्रकार के ठोस विशाल अंतर बंद की सरंचना रखते हैं। अत: यह नेटवर्क ठोस भी कहलाते हैं। (3) सहसंयोजी ठोस . बे ठोस जिनकी संरचनात्मक इकाई परमाणु होते है, सहसंयोजी ठोस कहलाते है | उदा- हीरा, गिरे फाइट,सिलिका, आदि | इन ठोसों में परमाणु के मध्य सहसंयोजक बंद पाए जाते हैं |सह संयोजक बंद के द्वारा इस प्रकार के ठोस विशाल अंतर बंद की सरंचना रखते हैं। अत: यह नेटवर्क ठोस भी कहलाते हैं। (3) सहसंयोजी ठोस . बे ठोस जिनकी संरचनात्मक इकाई परमाणु होते है, सहसंयोजी ठोस कहलाते है | उदा- हीरा, गिरे फाइट,सिलिका, आदि | इन ठोसों में परमाणु के मध्य सहसंयोजक बंद पाए जाते हैं |सह संयोजक बंद के द्वारा इस प्रकार के ठोस विशाल अंतर बंद की सरंचना रखते हैं। अत: यह नेटवर्क ठोस भी कहलाते हैं। MARK me br ainliest please |
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| 2676. |
Which substance are highly attractive in magnetic field is a paramagnetic or diamagnetic or ferro magnetic? |
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Answer» FERROMAGNETIC substances are strongly ATTRACTED by magnetic field. hope it HELPS you thank you |
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| 2677. |
Xy, x2 and y2 are diatomic molecules if ∆Hx-x,∆Hy-y, and ∆Hx-y, are in the ratio of 2 : 1 : 2 and enthalpy of formation of x - y from x2 and y2 is -100 kJ/mol. The value of ∆Hx-x is |
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Answer» Come fast I am there .I want to DISCUSS something PLS come fast Meeting ID: 889 354 8549 Passcode: 1IOgE5 |
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| 2678. |
How much KOH is needed to make 2 molality solution if water used was 200 gm. |
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Answer» Answer: 22.4g Explanation: molality = MOLES of solute / kilograms of solvent ATQ, molality = 2 amount of solvent = 200GM = 0.2kg ∴ 2 = no. of moles of KOH/ 0.2 => no. of moles of KOH = 2 X 0.2 = 0.4 mol we know that amount of substance(in gm) = no. of moles x molar mass of substance molar mass of KOH= 39+16+1 = 56 amu ∴, amount of KOH= 0.4 x 56 = 22.4g |
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| 2679. |
In which molecule, underlined element is in +5 oxidation state ? (1) Ca, (A103)2 (3) H3PO 3 (2) K2 H2 Sb207 (4) NO2///give correct answer |
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Answer» Let x be the oxidation number of Ca in Ca(ClO2)2. We know that the oxidation no. of OXYGEN = −2 but for Cl the oxidation no. is unknown. So, first, we need to FIND out the oxidation no. of Chlorine. From the structure, we can see that Ca is ATTACHED with 2 ClO2− ions. Let oxidation no. of Cl be Q, So, Q+2×(−2)=−1 ⇒Q=+3 SINCE, the overall charge on the complex is 0, the sum of oxidation states of all elements in it should be equal to 0. x+2(+3+2(−2))=0 x−2=0 x=+2 Thus, the oxidation number of Ca in Ca(ClO2)2 is +2. |
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| 2680. |
प्रोपेन-२ आल का संरचनात्मक फार्मूला |
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| 2681. |
Higher oxide metals nature |
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Answer» OXIDES that REACT with both are amphoteric. Metals tend to form basic oxides, non-metals tend to form acidic oxides, and amphoteric oxides are formed by ELEMENTS NEAR the boundary between metals and non-metals (metalloids). ... Oxides of more electropositive elements tend to be basic. They are called basic anhydrides. |
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| 2682. |
Metallic carbides are what in nature |
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Answer» Metal CARBIDES are nothing but compounds of a metal & carbon. They are very HARD & high other speciality PROPERTIES not POSSESSED by the basic metal from which they are formed |
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| 2683. |
The root mean square speed of oxygen at 27oCis 760 cm s-1. The root mean square speed of hydrogen at the same temperature will be (in cm s-1) |
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Answer» Answer: |
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| 2684. |
प्रोपेन-2 ऑल का रासायनिक सूत्र |
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Answer» C2H6 Explanation: |
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| 2685. |
367.5g of KClO3(m.m=122.5g)is heated . how many gram of KCl &Oxygen are formed &also calculate volume of oxygen |
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Answer» How is atomic mass of oxygen 16gram while there are 3.011*10^23 ATOMS in 16 GRAM of Explanation: How is atomic mass of oxygen 16gram while there are 3.011*10^23 atoms in 16 gram of Oxygen ? |
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| 2686. |
10. At 27°C, 250 mL of He diffuses in 15 minuteWhat is the time taken for 500 mL of SOdiffuse under the Same experimenteconditionsK1) 120 min2) 80 min3) 30 min4) 150 min11. The root mean square speed of oxygen at 27°160 m The mot mean soare speed |
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Answer» Answer: |
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| 2687. |
. At 27oC, 250 mL of He diffuses in 15 minutes.What is the time taken for 500 mL of SO2 to diffuse under the same experimental conditions? |
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| 2688. |
What is the IUPAC name of the following compounds |
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Answer» Explanation: 2,4 dinitrophenylhydrazine 2,4,6-trinitrophenol (PICRIC ACID) 1,2,3-trichloromethane ( CHLOROFORM) |
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| 2689. |
Yogik Fe3O4 me Fe or O ka pratishat sagthn gyat kijiye |
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Answer» (a) 32 (c) 38 (d) 34 |
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| 2690. |
What will happen if a patient is given hypertonic solution of glucose |
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Answer» Answer: then sugar conc in his CELLS will INCREASE and there r CHANCES THT he can become fat Explanation: |
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| 2691. |
Which of the following is not a property of plastics? A. Easily available B. Are not attacked by moths and moulds C. Can be worn in hot and humid weather Plz tell fast whoever tells the right answer I will mark him or her as brainliest |
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Answer» c Explanation: |
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| 2692. |
Yogik Fr3o4 me fe or o ka prtishat sngthn gyat kijiye |
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Answer» ft ugr try u GET off hi uh RT I it dfdxgy to eehuv e by if we uhrr try ft to Dr to by I got to FED ye Tu he r ft f DC v HO uh cd fhuhc Dr rgv y Dr efuug |
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| 2693. |
सामान्य धनिया एकल सेल में कितने परमाणु होते हैं |
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Answer» सामान्य घनीय एकक सेल एक परमाणु होता है। सामान्य घनीय एकक सेल में घन के कोनों पर परमाणु स्थित होते हैं। एकक सेल के कोने का जालक बिंदु आठ एकक सेलों में उभयनिष्ठ होता है, इसलिए एकक सेल के कोने के परमाणु का योगदान 1/8 होता है। प्रति एकक सेल के परमाणुओं की गणना इस प्रकार होगी..... कोने के परमाणुओं की संख्या = 8 कोने के परमाणु से उभयनिष्ठ एकक सेलों की संख्या = 8 सामान्य घनीय एकक सेल में परमाणुओं की संख्या = 8 × 1/8 = 1 ☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼☼ |
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| 2694. |
If λ = C222 2nn 2 −for Balmer series of hydrogen atom, what is the value of C2? |
Answer» thiazolium cation.Explanation:
the VALUE of C2ACID |
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| 2695. |
Di ICUCuSO4(aq.)n(iii) Non-electrolyte : It is a compound whichneither in solution nor in the molten state allowsan electric current to pass through it.It also does not decompose at the electrodes.Non-electrolytes do not have ions even insolution. They contain only molecules.Examples of non-electrolytesDistilled water, alcohol, kerosene, carbonDdisulphide, cane sugar, benzene, glucose and urea.ACIDS, BASES AND SALTS AS ELECTROLYTESAcids and alkalis ionise when dissolved in water,whereas bases and salts dissociate in fused (molten)solutions into free mobile ions.nS |
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Answer» Answer: gufudicoxig ☺ Explanation: .१.ए) प्रत्येक प्रश्नाच्या खाली दिलेल्या पर्यायांमधून योग्य पर्याय निवडा: १) 3x + 7Y = 27 आलेख काढण्यासाठी जर y = 3 x चे मूल्य किती असेल? 20 अ) 12 क) 9 2) M5 मी? - m5 मी + √5 = 0 खालील दिलेल्या पैकी कोणते विधान दिले आहे? A) 2 समीकरण दिले आहे? a) वास्तविक आणि असमान ब) वास्तविक आणि समान मुळे d) तीन मुळे. क) मुळे वास्तविक नाहीत 3) दिलेल्या ए.पी. साठी a = 3.5 डी = 0, एन = 101 नंतर टीएन? a) 0 4) दिलेल्या A.P t7 = 4, d% 3-4 नंतर a =? a) 6) बी) 3.5 क) 103.5 डी) 104.5 बी) 7 क) 20 ड) 28 बी) खालील निराकरण करा. 1) जर 15X + 17Y = 21, 17X + 15y = 11 x - y चे मूल्य शोधले तर. 2) डी = -3, डीएक्स = -42, उप = = 18 असल्यास वाई शोधा. 3) एक्स 2 + 5 एक्स = - (3-एक्स) वरून अक्ष 2 + बीएक्स + सी = 0 मध्ये खालील समीकरण लिहा. )) दिलेला अनुक्रम एपी आहे की नाही याचा निर्णय घ्या, २, -२, -6, -१०, ---- प्रश्न २.ए) खालील क्रियाकलाप पूर्ण करा: (कोणतीही -२) १) एपीचा पहिला टर्म व सामान्य फरक अनुक्रमे 6 आणि 3 आहेत. एस 27 ए = 6, डी 3, एस 27 = शोधा? एसएन = "आयओ + (एन -१) डी] म्हणा = = (१२+ (२-1-११) ओ १२१ 2 २) जर oc आणि बी चौरस समीकरणाचे मूळ असतील तर. २x२-xx-= = ० x + बी =)) पूर्ण 2: x - 6y = 3. X -5 y (xy)) चे आलेख काढण्यासाठी खालील सारणी खाली सोडवा: (कोणतीही -4) 1) निर्धारकाचे मूल्य शोधा: 3. -7 - 4 |
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| 2696. |
Balance the equation - Na positive + cl negative = Nacl |
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Answer» answer is Explanation: NA+ Cl=NaCl balanced equation 2Na+Cl2=2NaCl |
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| 2697. |
What is meant by ionization? dontbspam |
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Answer»
Ionisation is the process by which an atom or a MOLECULE ACQUIRES a negative or positive charge by gaining or LOSING electrons, often in conjunction with other CHEMICAL changes.
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| 2698. |
Write the IUPAC name of following compound |
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Answer» hyy mate ✌️ Urea, also KNOWN as carbamide, is an ORGANIC compound with CHEMICAL formula CO(NH₂)₂. This amide has two –NH₂ groups joined by a CARBONYL functional group. hope it will help you ❣️ |
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| 2699. |
does ionization of hydrogen atom is only occur in weak acids? DONT SPAM!!! PLZZZZZZZZ DO IT YOUESELF i need correct answer plzzzz |
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Answer» Answer: s becoz they hve weaker BONDS compared to strong ACIDS so ionization of hydrogen ATOM occurs only in WEAK acids Explanation: |
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| 2700. |
Write the IUPAC name of following compound |
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Answer» FOLLOW me ✌✌✌✌✌✌✌✌✌✌✌✌☺☺ |
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